Question

I know how to convert a character array containing numbers to an integer using iostream:

char[] ar = "1234";
int num;
ar >> num;

but how would I convert the last four characters of that array to an int?

char[] ar = "sl34nfoe11intk1234";
int num;
????;

Is there a way to point to an element in the array and start streaming from there?
Ideally I would start streaming from max array size – 4.

Answer 1

char* p = ar + strlen(ar) - 4;

Now p points to the '1' of "1234", and you can feed p into the stream.